6-Pack, Size B, Rite-Size Cartridge Refills

works in aqua-tech filters also

very good.

Its the wrong size! It says size B but its actually size C. I have a filter that uses size C so its not a big deal but it should be what the product says.

Work great!

They work great!

Exactly what I needed for our fish filter.

Perfect fit and great amount so I dont run out.

The product is fine, does what its used for. My issue is the packaging. Instead of putting it in a box it was in a cheap paper bag! The box was crushed which crunched the filters and released some of the charcoal. VERY disappointed!!

Works well

In this last shipment, the carbon had shaken out of the filters and was all over the inside of the shipping box. Usually thats not an issue. Kinda messy.